442931944280 has 128 divisors (see below), whose sum is σ = 1187239680000. Its totient is φ = 145506117120.

The previous prime is 442931944261. The next prime is 442931944289. The reversal of 442931944280 is 82449139244.

It is a super-2 number, since 2×442931944280² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442931944289) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 855521 + ... + 1271919.

It is an arithmetic number, because the mean of its divisors is an integer number (9275310000).

Almost surely, 2^442931944280 is an apocalyptic number.

442931944280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 442931944280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (593619840000).

442931944280 is an abundant number, since it is smaller than the sum of its proper divisors (744307735720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

442931944280 is a wasteful number, since it uses less digits than its factorization.

442931944280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416577 (or 416573 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 50.

The spelling of 442931944280 in words is "four hundred forty-two billion, nine hundred thirty-one million, nine hundred forty-four thousand, two hundred eighty".